These drugs increase the effect of Lovastatin, making it more dangerous in producing side effects:
Amitriptyline, Carvedilol, Celecoxib, Dapsone, Diclofenac, Dronabinol, Fluoxetine, Fluvoxamine, Glimepiride, Gliizide, Glyburide, Hexobarbital, Ibuprofen, Imipramine, Indomethacin, Irbessartan, Losartan, Mefenamic Acid, Meloxicam, Mirtazapine, Naproxen, Nateglinide, Phenacetin, Piroxicam, Ritonavir, Rosiglitazone, Sildenafil, Sulfamethoxazole, Tamoxifen, Tolbutamide, Torsemide, Warfarin, Zafirlukast, Zileuton
Source:
*http://www.edhayes.com/CYP450-4.html